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Free download in PDF Welding Objective Type Questions and Answers for competitive exams. These short objective type questions with answers are very important for Board exams as well as competitive exams. These short solved questions or quizzes are provided by Gkseries.
(21)
The phenomeon of weld decay occurs in.......
[A]
Cast iron
[B]
Brass
[C]
Bronze
[D]
Stainless steel
(22)
Preheating is essential in welding for......
[A]
High speed steel
[B]
Stainless steel
[C]
Cast iron
[D]
German silver
(23)
The following welding process uses consumable electrodes.......
[A]
TIG
[B]
MIG
[C]
Thermit
[D]
Gas
(24)
The suitable welded material used in TIG welding is.......
[A]
Aluminium
[B]
Stainless steel
[C]
Magnesium
[D]
All of the above
(25)
Flash butt welding is.......
[A]
Gas welding
[B]
Arc welding with straight polarity
[C]
Arc welding with reverse polarity
[D]
Resistance welding
Answer: Resistance welding
(26)
Seam welding is.......
[A]
Arc welding
[B]
Multi spot welding
[C]
Continuous welding
[D]
Gas welding
Answer: Continuous welding
(27)
Which type of electrode is used in submerged arc welding......
[A]
Bare rods
[B]
Coated electrodes
[C]
Core wires
[D]
Copper electrodes
(28)
In resistance welding the electrode material is made of.......
[A]
Carbon steel
[B]
Stainless steel
[C]
Copper
[D]
High speed steel
(29)
Too slow welding speed in arc welding would result in.......
[A]
Excessive piling up of weld metal, poor penetration, wasted electrodes
[B]
Excessive spatter, under cutting along edges, irregular deposits, wasted electrodes
[C]
Too small bead, weak weld, and wasted electrodes
[D]
Excessive pillling up of weld metal, overlapping without penetration of edges, wasted electrodes
Answer: Excessive pillling up of weld metal, overlapping without penetration of edges, wasted electrodes
(30)
The melting point of the filler metal in brazing should be above.......
[A]
420o C
[B]
820o C
[C]
1020o C
[D]
1200o C
31
Too fast welding speed in arc welding would result in.......
[A]
Excessive piling up of weld metal, poor penetration, wasted electrodes
[B]
Excessive spatter, under cutting along edges, irregular deposits, wasted electrodes
[C]
Too small bead, weak weld, and wasted electrodes
[D]
None of the above
Answer: Too small bead, weak weld, and wasted electrodes
32
Too high welding current in arc welding would result in......
[A]
Excessive piling up of weld metal, poor penetration, wasted electrodes
[B]
Excessive spatter, under cutting along edges, irregular deposits, wasted electrodes
[C]
Too small bead, weak weld, and wasted electrodes
[D]
None of the above
Answer: Excessive spatter, under cutting along edges, irregular deposits, wasted electrodes
33
Too low welding current in arc welding would result in.......
[A]
Excessive piling up of weld metal, poor penetration, wasted electrodes
[B]
Excessive spatter, under cutting along edges, irregular deposits, wasted electrodes
[C]
Too small bead, weak weld, and wasted electrodes
[D]
None of the above
Answer: Excessive piling up of weld metal, poor penetration, wasted electrodes
34
In arc welding, if arc is too long, it will result in.......
[A]
Electrode sticking to the base metal and base metal not melting and bead resting on top of the work, leading to poor fusion and gas and slag holes
[B]
Formation of large globules in an irregular pattern because of wandering of arc, leading of poor fusion with base petal
[C]
Arc extinction
[D]
Operator hazard
Answer: Formation of large globules in an irregular pattern because of wandering of arc, leading of poor fusion with base petal
35
In arc welding, if arc is too short, it will result in.......
[A]
Electrode sticking to the base metal and base metal not melting and bead resting on top of the work, leading to poor fusion and gas and slag holes
[B]
Formation of large globules in an irregular pattern because of wandering of arc, leading of poor fusion with base petal
[C]
Arc extinction
[D]
Operator hazard
Answer: Electrode sticking to the base metal and base metal not melting and bead resting on top of the work, leading to poor fusion and gas and slag holes
36
Arc stability is better with.......
[A]
AC welding
[B]
DC welding
[C]
Both AC with DC welding
[D]
Specially designed wave forms
37
Arc length in arc welding should be equal to......
[A]
Half the diameter of electrode rod
[B]
Rod diameter
[C]
Twice the rod diameter
[D]
2.5 times the rod diameter
38
Arc welding in arc welding should be nearly equal to.......
[A]
Diameter of electrode rod (d)
[B]
1.5 d
[C]
2 d
[D]
3 d
Answer: Diameter of electrode rod (d)
39
Which of the following carbon steel is most weldable.......
[A]
0.15 % carbon steel
[B]
0.30 % carbon steel
[C]
0.50 % carbon steel
[D]
0.75 % carbon steel
Answer: 0.15 % carbon steel
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